Keil is derived from Germanic origins. The name is of the meaning clumsy person. The name Keiler is a variant of Keil. Keil is rarely used as a baby name for boys.
Definition of flapjack for English Language Learners. : a thick, sweet cake made of oatmeal usually with molasses or honey.
The slang word flapper, describing a young woman, is sometimes supposed to refer to a young bird flapping its wings while learning to fly. However, it may derive from an earlier use in northern England to mean teenage girl, referring to one whose hair is not yet put up and whose plaited pigtail flapped on her back; or from an older word meaning prostitute.